I’m having a strange problem if it is a problem. The rocks on the right hand side of my tank keep getting under-mined. It is although something is making tunnels under them. Over time this causes my rocks to collapse. I’ve noticed sometimes some of the tunnel’s ‘entrances’ are blocked with shells. During the day my Skunk shrimp likes to hang around this side of the tank, alhtough I've never seen her tunneling. When I check the tank at night I find her hiding behind the rocks on the left side of the tank.
Does anyone have any idea what could be making the tunnels, should I be worried about it and is there anything I can do to prevent rock falls?
Does anyone have any idea what could be making the tunnels, should I be worried about it and is there anything I can do to prevent rock falls?